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Jul
3
comment Removing of artificial sampling step effects
model = a x^3 + b x^2 + c x + d; fit = FindFit[curve, model, {a, b, c, d}, x]; modelf = Function[{x}, Evaluate[model /. fit]]; Show[ListPlot@curve, Plot[{modelf[x]}, {x, 62700, 72300}, Frame -> True, Axes -> None, PlotStyle -> Red]] does this simple cubic polynomial passes your test of goodness?
Jul
3
revised Removing of artificial sampling step effects
added 4 characters in body
Jun
28
answered Calculating difference ratios (Δβ/Δρ) from a data set
Jun
28
reviewed Approve suggested edit on Calculating difference ratios (Δβ/Δρ) from a data set
Jun
28
comment Calculating difference ratios (Δβ/Δρ) from a data set
This is a Mathematica related site so people can tell you how to do it in Mathematica not "in microsoft excel or normal method"...
Jun
28
comment Nonlinear least squares on a GPU with Mathematica 9
@OleksandrR. Though the specific problem may turn out to be too small to reap any actual benefit from the GPU porting of the code I mentioned, it will be really interesting to know how one can port it to Mathematica if possible. This opens up the path for handling large scale optimization problems in Mathematica using CUDA. But we need some C and CUDA specialist here..I do not qualify!
Jun
28
comment Nonlinear least squares on a GPU with Mathematica 9
I found something in www5.cs.fau.de/research/software/cuda-quasi-newton-optimization. I don't know if CUDALink can be used to port these parallel code without much hassle.
Jun
28
accepted ReadList problem related to Record type
Jun
27
comment Adding noise to nonlinear control system using NDSolve
@ruebenko Thx! Finding the sensitivity of the response with respect to such random noise will be great.
Jun
27
revised Adding noise to nonlinear control system using NDSolve
added 119 characters in body
Jun
27
answered Adding noise to nonlinear control system using NDSolve
Jun
26
revised Specifying mesh in NDSolve
added 11 characters in body
Jun
26
revised Specifying mesh in NDSolve
added 11 characters in body
Jun
26
revised Specifying mesh in NDSolve
added 1 characters in body
Jun
25
revised Specifying mesh in NDSolve
added 301 characters in body
Jun
25
answered Specifying mesh in NDSolve
Jun
25
reviewed Approve suggested edit on list manipulation
Jun
20
reviewed Approve suggested edit on Solving $(-1-z)^n = z$, for $z$ in the unit circle
Jun
19
comment Fit implicit function
Search the website before asking your question. Here is an example mathematica.stackexchange.com/questions/10089/… . Hope it helps!
Jun
19
revised Fit implicit function
added 17 characters in body